"Twisted Metal is a series of vehicular combat video games published by Sony Computer Entertainment, and developed by various companies during its tenure. The series began on the PlayStation in 1995 and currently features seven games, with an eighth installment currently in production. It is the 147th best-selling video game franchise, selling over five million copies in North America alone.
It is the longest-running PlayStation-exclusive franchise with a total of fifteen years running from 1995 to present with the closest being the Gran Turismo series which has spanned thirteen years. Seven games of the series (including Twisted Metal: Black Online) were re-released as part of the Sony Greatest Hits program."
Source: Wikipedia, "Twisted_Metal", available under the CC-BY-SA License.